The Awful Dr. Orlof

Conrado San Martín

Inspector Tanner

Diana Lorys

Wanda Bronsky / Melissa

Howard Vernon

Dr. Orloff

Perla Cristal

Arne

María Silva

Dany (as Mary Silvers)

Ricardo Valle

Morpho Lodner

Mara Laso

Irma Gold

Venancio Muro

Jean Rousseau 'Jeannot'

Félix Dafauce

Chief Inspector

Faustino Cornejo

Raymond

Manuel Vázquez

Klein

Juan Antonio Riquelme

Fernando Montes

Malou (as Fernando C. Montes)

Elena María Tejeiro

Ursula Camila

Javier de Rivera

Ángel Calero

Sandalio Hernández

Fernando Sala

María de la Riva

(as Mª de la Riva)

Laly Vicent

José Carlos Arévalo

Enrique Ferpi

Rafael Ibáñez

Carmen Porcel

Madame Gold

Rafael Hernández

Marisa Paredes

Klemp

Luis Rico

Juan García Tiendra

False Suspect

Amy Márquez

Antonio Ramos

Luis Domínguez Luna

María del Carmen Ruiz

(as Mari Carmen Ruiz)

Pedro José Mariña

Pilar Gómez Ferrer

Wanda's Dresser

Tito García

Mercedes Manero

(as Mercedes Manera)

Antonio Ramos

Juan Antonio Arévalo

(as Juan Antº Arévalo)

Jesús Franco

Pianist (uncredited)